Guess this is more of a question than additional info. Are we still going to be capable of running when low on stamina? Because if not there isn't much you can carry with you unless you want to be the perfect sitting duck, as you have a major weakness if you are not able to sprint at all or even jump a fence.
The strategy of carrying a lot of gear (and choosing the heavier high-end gear) should be punished by slower speeds or shorter sprint distances. As the same with choosing a lightweight approach should give you the benefit of higher speed and longer sprints. That gives the game a cool way of building your character or strategy, so overall i like the implementation of stamina, but it seems a bit too punishing at the moment.